<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>

    </style>
</head>
<body>
    <!-- .enter
    .tab
    .delete (捕获“删除”和“退格”键)
    .esc
    .space
    .up
    .down
    .left
    .right -->
    
    <div id="app">
        <input @keyup.esc="keyup" type="text">
    </div>

    <script src="./vue.js"></script>

    <script>
        new Vue ({
            el : "#app" ,
            data : {
                
            },
            methods : {
                keyup ( ev ){
                    console.log("按下回车");
                }
            }
        })
    </script>
</body>
</html>